whoremaster vs whoremonger

whoremaster

noun

  • A man who uses the services of prostitutes. 

  • An exploiter of people. 

  • A pimp. 

whoremonger

noun

  • A frequent customer of whores. 

  • A procurer of whores; a pimp. 

How often have the words whoremaster and whoremonger occurred in a corpus of books? (source: Google Ngram Viewer )